Question

【題目】Let’s try doing the following experiment.

What to do：

Use string to hang a paper clip or other small object at about chest（胸部）level.

Pick up a stick，such as a broom handle. Take three or four steps away from the paper clip.

Now close one eye and walk toward the paper clip. Try to touch it with the tip of the stick. If you miss，try again，still keeping one eye closed. Now try it with both eyes open and see if it’s easier to do.

How it works：

In the experiment，you have to judge how far away the paper clip is. Your brain has several ways of doing this.

One simple way depends on how much your eye has to focus（聚焦）itself. Using only one eye，most people will find it difficult to touch the paper clip on the first try，but the brain still gets some information about distance—though not much.

Your brain can judge distance much better when you look at something with both eyes. In fact，your brain has more than one way to use both eyes in judging distance. For example，to see anything clearly，you have to make both of your eyes point at the object. When you look at a nearby object，your eyes turn inward. You can feel this happening if you look at the tip of your finger and move your finger toward your nose.

Your brain gets information from the eyes about how much they are pointing toward each other. Using that information，the brain can tell how far away any object is，whether it is a basketball or a paper clip.

【1】How many materials do we need at least to do the experiment?

A.Two B.Three C.Four D.Five

【2】The passage is mainly about that with eyes our brain can judge .

A.how big an object is

B.how high an object is

C.how far away an object is

D.how much information an object is

【3】Which of the following is true according to the passage?

A.Our brain judges distance in one way when we use both eyes.

B.Our brain cannot judge the distance of a small object but a big one.

C.How much our eyes focus helps our brain judge the size of an object.

D.How much our eyes focus helps our brain judge the distance of an object.

【4】From the experiment we can infer（推斷） .

A.with one eye we can see an object as clearly as we use two eyes

B.our eyes turn towards the inside when we look at an object very near

C.within 3 or 4 steps，the nearer an object is，the more clearly we can see it

D.our brain can hardly get any information about distance when we use one eye

Answer 1

【答案】

【1】B

【2】C

【3】D

【4】B

【解析】

試題分析：本文通過睜一只眼或兩只眼去觸碰掛著的一個回形針的實驗，給我們講述了人腦是如何通過眼睛等獲取信息并對周圍事物的距離作出判斷的。

【1】B推理判斷題。題意：做這個實驗我們至少需要多少材料?A.Two二；B.Three三；C.Four四； D.Five五。根據(jù)短文，我們至少需要：a string, a clip, a stick三種材料。故選B。

【2】C 細節(jié)題解題。題意：短文主要是關系用眼睛大腦可以判斷什么?A.how big an object is物體有多大；B.how high an object is物體有多高；C.how far away an object is物體有多遠；D.how much information an object is物體有多少信息。根據(jù)短文倒數(shù)第二句：the brain can tell how far away any object is大腦可以說出物體有多遠。故選C。

【3】D 推理判斷題。題意：根據(jù)短文，下面哪一個是對的?A.Our brain judges distance in one way when we use both eyes.我們用兩只眼時，大腦用一種方式判斷距離；B.Our brain cannot judge the distance of a small object but a big one.大腦不能判斷小東西的距離，能判斷大東西的距離；C.How much our eyes focus helps our brain judge the size of an object. 我們眼睛的聚焦情況幫助大腦判斷物體的大�。籇.How much our eyes focus helps our brain judge the distance of an object. 我們眼睛的聚焦情況幫助大腦判斷物體的距離。根據(jù)文中的：Your brain can judge distance much better when you look at something with both eyes當我們用兩只眼睛看事物時，可以更好地判斷出距離。結合短文內(nèi)容，可以推測出本題選D。

【4】B 推理判斷題。題意：從實驗中，我們可以推斷出什么? A.with one eye we can see an object as clearly as we use two eyes有一只眼看東西和用兩只眼一樣清楚；B.our eyes turn towards the inside when we look at an object very near當我們看很近的物體時，我們眼睛很靠后；C.within 3 or 4 steps，the nearer an object is，the more clearly we can see it在三、四步內(nèi)，物體起近，我們看得越清楚；D.our brain can hardly get any information about distance when we use one eye用一只眼睛時，我們的大腦幾乎得不到任何有關距離的信息。根據(jù)文中的：When you look at a nearby object，your eyes turn inward. 當你看附近的物體時，你的眼睛向內(nèi)翻�？芍�本題選B。